Abstract

AbstractThe precise prediction of end-point carbon content in liquid steel plays a critical role in increasing productivity as well as energy efficiency that can be achieved in the basic oxygen furnace (BOF) steelmaking process. Due to numerous and diversity of the studies on BOF end-point carbon prediction, it seems necessary to provide a comprehensive literature review on state-of-the-art developments in end-point carbon prediction for BOF steelmaking. This paper presents the characteristics of different end-point carbon prediction models. The end-point carbon prediction for BOF steelmaking has initially relied on the experience and skill of the operators. With the development of information technology and auto-detection methods, BOF end-point carbon prediction mainly has gone through three stages, such as static prediction, dynamic prediction, and intelligent prediction. Future contributions to the development and application of intelligent end-point carbon prediction in BOF steelmaking are still arduous tasks. However, it is envisaged that the intelligent end-point carbon prediction will witness more frequent applications and greatly improve the high-quality, high-efficiency, and stable production for BOF steelmaking in the future.

Highlights

  • Basic oxygen furnace (BOF) steelmaking is the main method for the steelmaking process

  • A review of end-point carbon prediction for BOF steelmaking process 655 prediction for BOF steelmaking mainly relies on the mathematical model established based on mass and heat balance, which can calculate the end-point carbon content in molten steel based on the initial amount [17,18,19,20]

  • The theoretical model could calculate the amount of blown oxygen and end-point carbon content based on the calculations of mass and heat balance during the BOF steelmaking process [21,22,23]

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Summary

Introduction

Basic oxygen furnace (BOF) steelmaking is the main method for the steelmaking process. The fluxes such as lime and dolomite are added to the vessel to slag, and impurities were removed [6,7,8]. With the rapid development of auto-detection methods, mathematical models, and algorithms, dynamic and intelligent end-point carbon predictions are available in the BOF steelmaking process. Based on the features of collected data, which was used to calculate the end-point carbon content, the BOF end-point carbon prediction is divided into three stages in this paper, such as static prediction, dynamic prediction, and intelligent prediction [13,14,15,16]

Development of end-point carbon prediction for BOF steelmaking
Static prediction
Theoretical model
Statistical model
Off-gas analysis system
Flame spectrometric analysis system
Findings
Intelligent prediction
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